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Articles by C. Akosim
Total Records ( 3 ) for C. Akosim
  C. Akosim , B.T. Kwaga , A. Ali and G.S. Mamman
  This study aimed at providing information on the species list and structure of flora resources in Pandam Wildlife Park. To achieve this, both plot and plotless methods for vegetation analysis were used. Girth at breast height was measured with diameter tape at 1.4 m above the ground and before the first branching. Height was measured by the angular pace method while crown area was determined from two perpendicular distances of tree canopy. Results obtained showed that there were 152 species of vascular plants belonging to 52 families. Frequency of species occurrence in the families ranged from 4.62% in Cyperaceae to 14.52% in Poaceae. Most of the trees were in the 0 50cm girth class category irrespective of the vegetation type. The Burkea woodland recorded the highest percentage of trees in the height class of 0 10 m while, the Riparian forest recorded the highest percentage of trees in the height class 20m. Crown cover ranged from 3754.30 m ha 1 in Burkea woodland to 9488.16 mha 1 in the Riparian forest.
  C. Akosim , M. Isa , A. Ali and B.T. Kwaga
  This study was carried out to determine water bird species list, dry season absolute population density and seasonal diversity in the Wetland areas of Yankari National Park. The point count method was used for the inventory of individual species. Diversity was determined using Simpson’s diversity index, while student t-test analysis of variance were used to compare water bird species diversity between seasons and sites. The results obtained indicated that a total of 49 water bird species belonging to 11 families occurred in the park. The dry season means density per hectare of water birds in the study area ranged from 43.43±5.12 for Ardeola ibis to 0.03±0.25 for Phalacrorax africana.There was no significant difference (p>0.05) in water birds diversity in Yankari National Park between dry and rainy seasons. Diversity of water birds by sites did not also vary (p>0.05). However, more water birds were observed in the dry season than in the rainy season. It is expected that the findings from this study will promote appropriate management strategies for conservation and maximum utilization of water birds in wetland areas of Yankari National Park.
  C. Akosim , B.T. Kwaga , B. Umar and G.S. Mamman
  This study investigated the role of 2 perennial aquatic bodies (Lake Pandam and Kurmi stream) in the conservation of avifauna and fish in Pandam Wildlife Park. Kurmi stream is the major tributary to Lake Pandam. A combination of variable transect and synchronous sighting methods were used for avifauna census while the fish landing of licensed fishermen was used in determining fish diversity of Lake Pandam. Physical and chemical characteristics of the two water bodies were determined. Results obtained showed that 29 avifauna species were observed on the Lake and its shores. Each bird population varied significantly (p< 0.05) between seasons. The white-face-tree duck (592.67±469.18) was the most abundant bird species and it occurred throughout the year on the Lake and its shore. A total of 29 fish species grouped into eighteen families were harvested from the Lake and listed. Tilapia galilaea (0.3673), Tilapia zilli (0.2824), Tilapia nilotica (0.2368), Heterotus niloticus (0.2824) and Citharinus citherus (0.2019) made the highest contribution to the diversity index of fish species in Lake Pandam. Significant (p< 0.05) variation occurred in the total hardness, nitrate, bicarbonate, magnesium manganese and fluoride concentrations of the two water bodies.
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